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www.venuelightingeffects.com
General Maintenance
To maintain optimum performance and minimize wear, fixtures should be cleaned frequently.
Usage and environment are contributing factors in determining frequency. As a general rule, fixtures
should be cleaned at least twice a month. Dust reduces performance and can cause overheating.
This can lead to reduced lamp life and increased mechanical wear. Be sure to power off fixture before
conducting maintenance.
• Unplug fixture from power.
• Use a vacuum or air compressor and a soft brush to remove dust collected on external vents.
• Clean all glass when the fixture is cold with a mild solution of glass cleaner or Isopropyl Alcohol and
a soft lint-free cotton cloth or lens tissue.
• Apply solution to the cloth or tissue and drag dirt and grime to the outside of the lens.
• Gently polish optical surfaces until they are free of haze and lint.
The cleaning of external optical lenses and/or mirrors must be carried out periodically to optimize light
output. Cleaning frequency depends on the environment in which the fixture operates. Damp, smoky or
particularly dirty surroundings can cause greater accumulation of dirt on the unit’s optics. Clean with soft
cloth using normal glass cleaning fluid. Clean the external optics at least every 20 days. Clean the fixture at
least every 30/60 days.
Always dry parts carefully after cleaning them.
SYMPTOM
POSSIBLE CAUSE(S)
POSSIBLE ACTION(S)
Breaker/Fuse keeps blowing
•Excessive circuit load
• Short circuit along the power wires
• Check total load placed on the electrical circuit
• Check for a short in the electrical wiring (internal
and/or external)
Device does not power up
•No power
•Loose power cord
•Check for power on Mains
•Check power cord
Fixture is not
responding to DMX
•Wrong DMX addressing
•Damaged DMX cables
• Wrong polarity settings on
the controller
•Loose DMX cables
•Faulty DMX interface
•Faulty Main PCB
•Check Control Display and unit addressing
•Check DMX cables
•Check polarity switch settings on the controller
•Check cable connections
•Replace DMX input
•Replace Main PCB
Loss of signal
•Non DMX cables
•Bouncing signals
•Long cable/Low level signal
•Too many fixtures
•Interference from AC wires
•Use only DMX compatible cables
•Install terminator as suggested
•Install amplifier right after fixture with strong signal
• Install an optically coupled DMX splitter
after unit #32
• Keep DMX cables separated from power cables
or black light
General Troubleshooting
Summary of Contents for tetra control
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